2017 iHEARTRADIO MUSIC AWARDS: COMPLETE WINNERS LIST.

One of the biggest night's in music went down on Sunday, inside The Forum in Los Angeles.

Superstars like Katy Perry, Bruno Mars, The Chainsmokers , Florida Georgia Line & Thomas Rhett all showed up.

Congratulations to Thomas Rhett, one of the big winners, walking away with Country Artist of the Year and Kelsea Ballerini, who took home Best New Country Artist.

Check out the complete list of this year's iHeartRadio Music Awards winners, HERE.